UM mailbox issues

Hi omboau,

to remove an old Welcome message and add a new one for a mailbox in Exchange Online using PowerShell, you can try to use the following steps:

1. Connect to Exchange Online:
If you're not already connected, you need to connect to Exchange Online using PowerShell. Here's how you can do it:

Connect-ExchangeOnline 

2. Remove the Old Welcome Message:
To remove the old welcome message, you can use the `Set-UMMailbox` cmdlet with the `-WelcomeMessageEnabled` parameter set to `$false`. Replace `<UserEmail>` with the email address of the mailbox for which you want to remove the old message.

Set-UMMailbox -Identity <UserEmail> -WelcomeMessageEnabled $false

3. Add the New Welcome Message:
To add a new welcome message, you can use the `Set-UMMailbox` cmdlet with the `-WelcomeMessage` parameter. Replace `<NewWelcomeMessage>` with the text or path to the audio file for the new welcome message.

Set-UMMailbox -Identity <UserEmail> -WelcomeMessage "<NewWelcomeMessage>"

4. Verify Changes:
You can verify that the welcome message has been updated by using the `Get-UMMailbox` cmdlet:

Get-UMMailbox -Identity <UserEmail> | Select-Object WelcomeMessage, WelcomeMessageEnabled

Set-UMMailbox (ExchangePowerShell) | Microsoft Learn